結果

問題 No.491 10^9+1と回文
ユーザー chocoruskchocorusk
提出日時 2020-10-04 14:36:20
言語 Java21
(openjdk 21)
結果
AC  
実行時間 198 ms / 1,000 ms
コード長 2,651 bytes
コンパイル時間 2,500 ms
コンパイル使用メモリ 79,660 KB
実行使用メモリ 57,880 KB
最終ジャッジ日時 2024-07-19 14:43:50
合計ジャッジ時間 26,105 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 195 ms
57,664 KB
testcase_01 AC 197 ms
57,360 KB
testcase_02 AC 197 ms
57,368 KB
testcase_03 AC 193 ms
57,500 KB
testcase_04 AC 194 ms
57,692 KB
testcase_05 AC 196 ms
57,636 KB
testcase_06 AC 192 ms
57,564 KB
testcase_07 AC 198 ms
57,608 KB
testcase_08 AC 190 ms
57,472 KB
testcase_09 AC 197 ms
57,744 KB
testcase_10 AC 196 ms
57,336 KB
testcase_11 AC 193 ms
57,504 KB
testcase_12 AC 197 ms
57,688 KB
testcase_13 AC 194 ms
57,364 KB
testcase_14 AC 195 ms
57,492 KB
testcase_15 AC 194 ms
57,352 KB
testcase_16 AC 194 ms
57,412 KB
testcase_17 AC 188 ms
57,352 KB
testcase_18 AC 187 ms
57,880 KB
testcase_19 AC 193 ms
57,328 KB
testcase_20 AC 186 ms
57,688 KB
testcase_21 AC 188 ms
57,416 KB
testcase_22 AC 187 ms
57,364 KB
testcase_23 AC 196 ms
57,396 KB
testcase_24 AC 188 ms
57,832 KB
testcase_25 AC 182 ms
57,528 KB
testcase_26 AC 194 ms
57,472 KB
testcase_27 AC 166 ms
57,396 KB
testcase_28 AC 185 ms
57,252 KB
testcase_29 AC 189 ms
57,336 KB
testcase_30 AC 190 ms
57,344 KB
testcase_31 AC 194 ms
57,384 KB
testcase_32 AC 195 ms
57,572 KB
testcase_33 AC 186 ms
57,152 KB
testcase_34 AC 198 ms
57,432 KB
testcase_35 AC 193 ms
57,144 KB
testcase_36 AC 189 ms
57,244 KB
testcase_37 AC 188 ms
57,484 KB
testcase_38 AC 193 ms
57,356 KB
testcase_39 AC 191 ms
57,576 KB
testcase_40 AC 192 ms
57,476 KB
testcase_41 AC 168 ms
57,784 KB
testcase_42 AC 167 ms
57,716 KB
testcase_43 AC 190 ms
57,456 KB
testcase_44 AC 195 ms
57,500 KB
testcase_45 AC 194 ms
57,332 KB
testcase_46 AC 190 ms
57,652 KB
testcase_47 AC 191 ms
57,476 KB
testcase_48 AC 191 ms
57,320 KB
testcase_49 AC 190 ms
57,528 KB
testcase_50 AC 194 ms
57,772 KB
testcase_51 AC 191 ms
57,372 KB
testcase_52 AC 194 ms
57,620 KB
testcase_53 AC 180 ms
57,624 KB
testcase_54 AC 186 ms
57,148 KB
testcase_55 AC 183 ms
57,400 KB
testcase_56 AC 164 ms
57,324 KB
testcase_57 AC 164 ms
57,500 KB
testcase_58 AC 188 ms
57,620 KB
testcase_59 AC 180 ms
57,280 KB
testcase_60 AC 187 ms
57,632 KB
testcase_61 AC 187 ms
57,340 KB
testcase_62 AC 190 ms
57,148 KB
testcase_63 AC 167 ms
57,632 KB
testcase_64 AC 189 ms
57,272 KB
testcase_65 AC 182 ms
57,344 KB
testcase_66 AC 190 ms
57,328 KB
testcase_67 AC 188 ms
57,640 KB
testcase_68 AC 191 ms
57,168 KB
testcase_69 AC 190 ms
57,504 KB
testcase_70 AC 185 ms
57,600 KB
testcase_71 AC 194 ms
57,368 KB
testcase_72 AC 190 ms
57,600 KB
testcase_73 AC 193 ms
57,680 KB
testcase_74 AC 190 ms
57,484 KB
testcase_75 AC 167 ms
57,560 KB
testcase_76 AC 184 ms
57,568 KB
testcase_77 AC 182 ms
57,404 KB
testcase_78 AC 187 ms
57,676 KB
testcase_79 AC 190 ms
57,280 KB
testcase_80 AC 186 ms
57,468 KB
testcase_81 AC 186 ms
57,540 KB
testcase_82 AC 192 ms
57,488 KB
testcase_83 AC 191 ms
57,400 KB
testcase_84 AC 187 ms
57,404 KB
testcase_85 AC 189 ms
57,448 KB
testcase_86 AC 196 ms
57,840 KB
testcase_87 AC 197 ms
57,368 KB
testcase_88 AC 193 ms
57,188 KB
testcase_89 AC 190 ms
57,428 KB
testcase_90 AC 192 ms
57,472 KB
testcase_91 AC 192 ms
57,652 KB
testcase_92 AC 190 ms
57,316 KB
testcase_93 AC 189 ms
57,420 KB
testcase_94 AC 191 ms
57,452 KB
testcase_95 AC 192 ms
57,504 KB
testcase_96 AC 192 ms
57,532 KB
testcase_97 AC 191 ms
57,224 KB
testcase_98 AC 191 ms
57,284 KB
testcase_99 AC 190 ms
57,472 KB
testcase_100 AC 192 ms
57,448 KB
testcase_101 AC 191 ms
57,728 KB
testcase_102 AC 191 ms
57,540 KB
testcase_103 AC 198 ms
57,700 KB
testcase_104 AC 188 ms
57,444 KB
testcase_105 AC 166 ms
57,784 KB
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ソースコード

diff #

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		//FastScanner scanner=new FastScanner();
		PrintWriter out = new PrintWriter(System.out);
		int ans=0;
		long n=scanner.nextLong();
		for(long i=1; i<=9; i++) {
			if(i*1000000001<=n) ans++;
		}
		for(int i=1; i<=9999; i++) {
			List<Integer> d=new ArrayList<Integer>();
			int x=i;
			while(x>0) {
				d.add(x%10);
				x/=10;
			}
			int a=i;
			for(int c:d) {
				a*=10;
				a+=c;
			}
			if((long)a*1000000001<=n) ans++;
			for(int j=0; j<10; j++) {
				a=i*10+j;
				for(int c:d) {
					a*=10;
					a+=c;
				}
				if((long)a*1000000001<=n) ans++;
			}
		}
		out.println(ans);
		out.close();
		scanner.close();
	}
}

class FastScanner {
	private final InputStream in = System.in;
	private final byte[] buffer = new byte[1024];
	private int ptr = 0;
	private int buflen = 0;

	private boolean hasNextByte() {
		if (ptr < buflen) {
			return true;
		} else {
			ptr = 0;
			try {
				buflen = in.read(buffer);
			} catch (IOException e) {
				e.printStackTrace();
			}
			if (buflen <= 0) {
				return false;
			}
		}
		return true;
	}

	private int readByte() {
		if (hasNextByte())
			return buffer[ptr++];
		else
			return -1;
	}

	private static boolean isPrintableChar(int c) {
		return 33 <= c && c <= 126;
	}

	public boolean hasNext() {
		while (hasNextByte() && !isPrintableChar(buffer[ptr]))
			ptr++;
		return hasNextByte();
	}

	public String next() {
		if (!hasNext())
			throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b = readByte();
		while (isPrintableChar(b)) {
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}

	public long nextLong() {
		if (!hasNext())
			throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (b < '0' || '9' < b) {
			throw new NumberFormatException();
		}
		while (true) {
			if ('0' <= b && b <= '9') {
				n *= 10;
				n += b - '0';
			} else if (b == -1 || !isPrintableChar(b)) {
				return minus ? -n : n;
			} else {
				throw new NumberFormatException();
			}
			b = readByte();
		}
	}

	public int nextInt() {
		long nl = nextLong();
		if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
			throw new NumberFormatException();
		return (int) nl;
	}

	public double nextDouble() {
		return Double.parseDouble(next());
	}
}
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